OriPure 5W All Tube Guitar Amplifier Head OAH-05

2. Handcrafted Output Transformer: The output transformer is handcrafted with a paper insulation process, which reduces stray capacitance and increases resonant frequency, leading to better high-frequency response and transparent sound. The use of Grain-Oriented Silicon Steel (35Z155-0.35) increases inductance and improves low-frequency performance.